Incandescent gas-burner.



Patented Feb. 26, I90l.

E. GERVENKA & J. BERNT.

INGANDESCENT GAS BURNER.

2 Sheets-Shoat l.

(Application filed Dec. 16, 1899.)

(No Model.)

INVENTORS WITNESSES:

Wm X m Anon/VH3 No. 668,676. Patented Feb. 26, I90l.

E. CEBVENKA & .1. BERNT.

l NCANDESCENT GAS BURNER (Application filed Dec. 16, 1899.)

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UNITED STATES PATENT OFFICE.

EMANUEL OERVENKA AND J OSEF BERNT, OF PRAGUE, AUSTRIA-HUNGARY.

INCAN D ESCENT GAS-BU RN ER.

SPECIFICATION forming part of Letters Patent No. 668,676, dated February 26, 1901.

Application filed December 16, 1899. Serial No- 740,666. .No model.)

To all whom it may concern.-

Be it known that we, EMANUEL CERVENKA and J OSEF BERNT, merchants, citizens of the Empire of Austria-Hungary, residing at Wassergasse No. 33, Prague, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in or Relatingto Incandescent Gas-Lamps, of which the following is a specification.

The present invention relates to an improved incandescent gas-lamp suitable for use in place of electricincandescent lamps. The lamp may be constructed in many modified forms, all differing essentially from the apparatus used at present in the arrangement of the gas-supply tube, such being placed between the cylinder and the bulb or like shaped globe, and in the novel arrangement of the latter. The light radiates all around in any inclined position and sheds downward an unobstructed light.

The present invention is represented in the accompanying drawings.

Figure 1 is a vertical section of a lamp. Figs. 2 and 3 show constructive modifications of the glass bulb.

As represented in Fig. 1, the gas passes from the gas-pipe a, through the tube d, made of thin metal, then through a glass tube e, (which may, however,- be of metal,) and through the bend it into the burner of any required construction. The ends of the tube d and of the gas-tube are held together by a joint 1". By this arrangement of the gas-tube 6 between the lamp-cylinder i and the bulb b the former is held very cool. Whatever the shape of the glass covers (globes, bulbs, &c.)

of these lamps they all are closed at the bottom, as shown in the drawings, and provided with an inner cylinder or chimney 1 arranged within the part of the globe b, by bending back a portion of the latter, so that the gas-supply device may be arranged in the intermediate space 2, formed by the lamp-cylinder i and the globe b. These globes are provided in the upper portion with air-inlet openings 1, as shown in the drawings. The globe or bulb may be secured to the holder 25 (and outer shade, if used) by means of screws or arms, or any other device answering the purpose may be employed, while the lamp itself may be secured to the gas-pipe by a bayonet-joint y, screw, or otherwise.

These lamps may be employed either singly on wall-brackets or in series and will give a shady and agreeable light.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is 1. In combination in an incandescent gaslamp, an inner cylinder, an outer globe, connections d and k, at the upper and lower parts of the lamp, and a gas-tube e, of transparent material arranged between the inner cylinder and the globe and joined to the connections d and 7c, said transparent tube e being opposite the lighting medium and the said inner cylinder and outer globe being made in one piece of transparent material with perforations therein, substantially as described.

2. A lamp comprising an inner cylindrical portion and an outer globe, said parts being made in one piece of transparent material and with perforations, the said inner cylinder being open at top and bottom and the outer globe being closed at its bottom part, substantially as described.

- In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

EMANUEL CERVENKA.

J OSEF BERNT.

Witnesses:

SCHWEINBURG ARTHUR, J r., ADOLPH FISCHER. 

